At what age is it normal for bone marrow cellularity to be 80% to 90% (i.e., has very little fat)?
a. At birth
b. In an 8 year old
c. In a 20 to 40 year old
d. In those older than 70 years
ANS: A
At the time of birth, the bone marrow is fully active and extremely cellular with very little fat. It contains all hematopoietic cell lineages.
Health Professions
You might also like to view...
How long does a full-face laser resurfacing generally take?
a. 15 minutes b. 30 minutes c. 45 minutes d. One to two hours
Health Professions
Which one of the following can create difficulties for EMRs responding to natural disasters or incidents of terrorism?
A) Roads and streets may be impassable. B) Scene hazards are more difficult to predict than on routine calls. C) The resources needed, such as hospitals, may not be accessible. D) All of the above.
Health Professions